Earlier in the evening, Favorite Collaboration winners Charlie Puth and Wiz Khalifa shared the stage for a moving duet of their No. 1 hit "See You Again," punctuated by a silver shower of confetti that rained over the audience. The emotive duet had immediately followed a piano-driven solo performance of "One Call Away," Puth's latest radio hit, which was met with a sea of twinkling cell phone lights in the audience. Watch:

Closing out the show, California pop-rockers DNCE got the party going with a colorful, rowdy rendition of their groovy debut single and radio smash "Cake by the Ocean." Watch the upbeat, sugary sweet performance from the wacky four-member band led by Joe Jonas below: